1) blend door actuator motor has failed
2) a broken blend door itself
Hope it's #1 as that's cheap and easy.
See "Related Questions" below for more about each
Answersounds like the fan that blows it in is busted have it checked outOr...See "Related Questions" below for more
Could this be 2 separate problems?Stuck in defrost modeNo heatSee "Related Questions" below for more about both
Check for a stuck open thermostat, check for an always on radiator fan, control valve stuck partially open or a clogged heater core.
Heater core changed three years ago,I changed Thermostat Heater still blows cool air.
can you please clarify what you mean, do you mean that the front heater blows cold but the rear blows hot or do you mean that when the heating is on cold it blows hot? many thanks paul
the heater blows warm air when fan is on low but blows cold air when fan is turn to higher setting
Get the air out of your heater core.
The heater fan ONLY blows the air, it does not make the temperature of that air. Your heater temperature controls how hot the air is. Adjust your heater temperature for hotter or cooler air.
we changed radaitor & thermastate , now heater blows cold air
heater hoses might have been disconected
ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?
AnswerWater pump going bad, belt not tight on waterpump. when you accelerate it spins faster and pushes more water. Have you filled the radiator with the car running? That is the only way to be sure there is enough coolant to keep the heater filled.Another thought is a partially plugged heater core. The higher rpm's could provide a bit of extra flow through the constricted core passages (??).See "Related Questions" below for more about waterpumps and heatercores...